Leather - Chemical tests - Quantitative analysis of tanning agents by filter method (ISO 14088:2020)

This document specifies a test method for the determination of tanning agents through filtration of all vegetable and synthetic tanning products.

Leder - Chemische Prüfungen - Quantitative Analyse von Gerbstoffen durch Filterverfahren (ISO 14088:2020)

Dieses Dokument legt ein Prüfverfahren zur Bestimmung von Gerbstoffen durch Filterverfahren in sämtlichen pflanzlichen und synthetischen Gerbmitteln fest.

Cuir - Essais chimiques - Analyse quantitative des agents de tannage par la méthode au filtre cloche (ISO 14088:2020)

Le présent document spécifie une méthode d'essai permettant de déterminer les agents de tannage par filtration de tous les produits de tannage végétaux et synthétiques.

Usnje - Kemijski preskusi - Kvantitativna analiza sredstev za strojenje s filtrsko metodo (ISO 14088:2020)

General Information

Status
Published
Publication Date
07-Apr-2020
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Due Date
08-Apr-2020
Completion Date
08-Apr-2020

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SLOVENSKI STANDARD
SIST EN ISO 14088:2020
01-junij-2020
Nadomešča:
SIST EN ISO 14088:2012

Usnje - Kemijski preskusi - Kvantitativna analiza sredstev za strojenje s filtrsko

metodo (ISO 14088:2020)

Leather - Chemical tests - Quantitative analysis of tanning agents by filter method (ISO

14088:2020)
Leder - Chemische Prüfungen - Quantitative Analyse von Gerbstoffen durch
Filterverfahren (ISO 14088:2020)

Cuir - Essais chimiques - Analyse quantitative des agents de tannage par la méthode au

filtre cloche (ISO 14088:2020)
Ta slovenski standard je istoveten z: EN ISO 14088:2020
ICS:
59.140.30 Usnje in krzno Leather and furs
71.040.40 Kemijska analiza Chemical analysis
SIST EN ISO 14088:2020 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 14088:2020
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SIST EN ISO 14088:2020
EN ISO 14088
EUROPEAN STANDARD
NORME EUROPÉENNE
April 2020
EUROPÄISCHE NORM
ICS 59.140.30 Supersedes EN ISO 14088:2012
English Version
Leather - Chemical tests - Quantitative analysis of tanning
agents by filter method (ISO 14088:2020)

Cuir - Essais chimiques - Analyse quantitative des Leder - Chemische Prüfungen - Quantitative Analyse

agents de tannage par la méthode au filtre cloche (ISO von Gerbstoffen durch Filterverfahren (ISO

14088:2020) 14088:2020)
This European Standard was approved by CEN on 26 March 2020.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this

European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references

concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN

member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by

translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management

Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,

Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,

Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and

United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 14088:2020 E

worldwide for CEN national Members.
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SIST EN ISO 14088:2020
EN ISO 14088:2020 (E)
Contents Page

European foreword ....................................................................................................................................................... 3

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SIST EN ISO 14088:2020
EN ISO 14088:2020 (E)
European foreword

This document (EN ISO 14088:2020) has been prepared by Technical Committee ISO/IULTCS

"International Union of Leather Technologists and Chemists Societies" in collaboration with Technical

Committee CEN/TC 289 “Leather” the secretariat of which is held by UNI.

This European Standard shall be given the status of a national standard, either by publication of an

identical text or by endorsement, at the latest by October 2020, and conflicting national standards shall

be withdrawn at the latest by October 2020.

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CEN shall not be held responsible for identifying any or all such patent rights.

This document supersedes EN ISO 14088:2012.

According to the CEN-CENELEC Internal Regulations, the national standards organizations of the

following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,

Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,

Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of

North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the

United Kingdom.
Endorsement notice

The text of ISO 14088:2020 has been approved by CEN as EN ISO 14088:2020 without any modification.

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SIST EN ISO 14088:2020
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SIST EN ISO 14088:2020
INTERNATIONAL ISO
STANDARD 14088
IULTCS/IUC 32
Second edition
2020-03
Leather — Chemical tests —
Quantitative analysis of tanning agents
by filter method
Cuir — Essais chimiques — Analyse quantitative des agents de
tannage par la méthode au filtre cloche
Reference numbers
ISO 14088:2020(E)
IULTCS/IUC 32:2020(E)
ISO 2020
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SIST EN ISO 14088:2020
ISO 14088:2020(E)
IULTCS/IUC 32:2020(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2020

All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may

be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting

on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address

below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2020 – All rights reserved
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SIST EN ISO 14088:2020
ISO 14088:2020(E)
IULTCS/IUC 32:2020(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 1

4 Principle ........................................................................................................................................................................................................................ 1

5 Reagents ........................................................................................................................................................................................................................ 1

6 Apparatus ..................................................................................................................................................................................................................... 2

7 Sampling and sample preparation .................................................................................................................................................... 4

8 Instrumental analysis ...................................................................................................................................................................................... 4

8.1 Preparation of the analytical solution ................................................................................................................................. 4

8.1.1 Vegetable tanning agents .......................................................................................................................................... 4

8.1.2 Synthetic tanning agents ........................................................................................................................................... 5

8.2 Preparation of the Procter bell .................................................................................................................................................. 5

8.3 De-tanning the analytical solution (determination of the non-tanning agents) ............................ 5

8.4 Determination of soluble substances .................................................................................................................................. 6

8.5 Determination of total solids ...................................................................................................................................................... 6

9 Calculation and expression of the results .................................................................................................................................. 7

10 Test report ................................................................................................................................................................................................................... 8

Annex A (normative) Determination of hide powder blank value ........................................................................................ 9

Annex B (informative) Suppliers of hide powder .................................................................................................................................10

© ISO 2020 – All rights reserved iii
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SIST EN ISO 14088:2020
ISO 14088:2020(E)
IULTCS/IUC 32:2020(E)
Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards

bodies (ISO member bodies). The work of preparing International Standards is normally carried out

through ISO technical committees. Each member body interested in a subject for which a technical

committee has been established has the right to be represented on that committee. International

organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.

ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of

electrotechnical standardization.

The procedures used to develop this document and those intended for its further maintenance are

described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the

different types of ISO documents should be noted. This document was drafted in accordance with the

editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of

any patent rights identified during the development of the document will be in the Introduction and/or

on the ISO list of patent declarations received (see www .iso .org/ patents).

Any trade name used in this document is information given for the convenience of users and does not

constitute an endorsement.

For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and

expressions related to conformity assessment, as well as information about ISO's adherence to

the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see

www .iso .org/ iso/ foreword .html.

This document was prepared by the Chemical Test Commission of the International Union of Leather

Technologists and Chemists Societies (IUC Commission, IULTCS) in collaboration with the European

Committee for Standardization (CEN) Technical Committee CEN/TC 289, Leather, the secretariat of

which is held by UNI, in accordance with the Agreement on technical cooperation between ISO and CEN

(Vienna Agreement).

IULTCS, originally formed in 1897, is a world-wide organization of professional leather societies to

further the advancement of leather science and technology. IULTCS has three Commissions, which

are responsible for establishing international methods for the sampling and testing of leather. ISO

recognizes IULTCS as an international standardizing body for the preparation of test methods for

leather.

This second edition cancels and replaces the first edition (ISO 14088:2012), which has been technically

revised.
The main changes to the previous edition are as follows:
— Clause 8 (Clause 7 in the first edition) has been extensively revised;
— Annex A from the first edition has been deleted.

Any feedback or questions on this document should be directed to the user’s national standards body. A

complete listing of these bodies can be found at www .iso .org/ members .html.
iv © ISO 2020 – All rights reserved
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SIST EN ISO 14088:2020
ISO 14088:2020(E)
INTERNATIONAL STANDARD
IULTCS/IUC 32:2020(E)
Leather — Chemical tests — Quantitative analysis of
tanning agents by filter method
1 Scope

This document specifies a test method for the determination of tanning agents through filtration of all

vegetable and synthetic tanning products.
2 Normative references

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements of this document. For dated references, only the edition cited applies. For

undated references, the latest edition of the referenced document (including any amendments) applies.

ISO 3696, Water for analytical laboratory use — Specification and test methods
3 Terms and definitions
No terms and definitions are listed in this document.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at http:// www .electropedia .org/
4 Principle

Indirect gravimetric analysis of vegetable and synthetic tanning agents through fixing of the absorbent

compounds on low-chromed hide powder.
5 Reagents
5.1 Distilled water, freshly prepared, grade 3 according to ISO 3696.

The pH value of the water shall be between 5 and 7. When using methyl red, the water should not turn

red. The evaporation residue of 100 ml should be less than 1 mg.
5.2 Hide po
...

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